Internal-combustion engine.



v C.E.LATHAM. INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAY 3, I913- Patented Nov. 9, 1915.

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c. E. LAT HAM. INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAY 3. I913.

Patented Nov. 9, 1915.

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CHARLES LATE-TATE, OF STONINGTCN, CONNECTICUT, ASSIGNOR TO BESSIE I). NELSON,

anniuis'rna'rnix, or sos'rou, AssAcHUsnr'rs.

INTERNAL-COMBUSTION ENGINE. f

Specification of Letters Patent. Patented Ne 9 191'5 Application filed May 3, 1913. Serial No. 765.209.

To all whom it may concern Be it known that 1, CHARLES E. LATHA'M,

a citizen of the United States, residing at Stonington, county of h ew London, State of Con ecticut, have invented certain new and useful Improvements in Internal-Combustion Engines, of which the following is a specification.

This invention relates to internal combustion engines, and particularly to a two-cycle engine of that class adapted to the consumption of hydrocarbon fuel. In an engine of this type, in which a charge is sucked in and compressed below the piston, it is very important that the gases be thoroughly mixed prior to delivery and that they be delivered at a temperature giving the greatest explosive power to the gas. These, together with various other objects which will be more fully discussed later, are contemplated in my present invention.

The construction and operation of my device will be more fully disclosed in the specificatien, and in the drawings which form a part of this specification I have shown as an illustrative embodiment a form of engine satisfactory for practical purposes.

Throughout specification and drawings like reference numerals are employed to indicate corresponding parts and in the drawings:Figure 1 is a central vertical section of an engine embodying my invention, Fig. 2 is an enlarged detail of the engine cylinder with the head partly removed to show the depending shell, and Fig. 3 is a transverse section on the line 33, Fig. 2.

The engine bed is provided with an upright frame 1 which is mounted on a crank case 2 in which the shaft 3 of the crank l is journaled. The cylinder is formed with an external water jacket 5 surrounding an inner shell 6 which depends on its lower end 6 hanging wholly free within the lower part of the head which is formed by the extension 5 of the water jacket. I provide an intake pipe 11 having the usual check valve 16 and an exhaust pipe 12. Opposite the intake is an intake port 11 piercing the inner shell 6 and opposite the exhaust 12 is an exhaust port 12 piercing said shell at the opposite side of the intake. The piston 17 is provided witha deflector 18 suitably located to discharge the gas Within the head and prevent a direct rush across the head to the exhaust, thus scavenging the cylinder and driving out the products of combustion. The piston rod 18 passes through a stuffing box 19in the lower head of the cylinder and is joined by a connecting rod 20 to the crank 4. v

21 is a slide working on a slideway 22 which is bolted to the engine and frame.

The spark plug 23 is provided with suit able points and is adapted to be connected with the usual electrical connections, preferably of the jump spark type which is especially adapted to this type of engine.

The operation of the engine will be as follows: it the piston be in the position shown in Fig. l with a compres ed charge above it and the same be fired, the piston will descend under the effective impulse of the eX- plosion until it uncovers the exhaust port 152 which will allow the products of combustion to pass through the exhaust 12. The exhaust port is slightly above the intake port so that after the exhaust port is open the intake port begins to open and thecharge which has been compressed and mixed by the piston in its previous ascent and its present descent is forced into'the cylinder above the piston to scavenge the same and replace the fired charge. The piston upon its rise closes the intake port 11 drawing through the intake pipe 11 a fresh charge past the check valve 16, down around the bottom of the shell 6 to the lower side of the piston. As the charge is drawn around the lower end 6 of this shell it is thoroughly mixed and completely vaporized. As soon as the charge above the piston is suhiciently compressed it is again fired and the cycle repeated. It will beseen that belowthe piston there will be a'reserve body ofgasto which each incoming charge is added and that the gasesare churned around the lower edge of the shell 6 Various modifications may obviously be made in my invention,all without departing from the spirit of the same itwithin the limits of the appended claims.

hat I, therefore, claim and desire to secure by Letters Patent is 1. In an internal combustion engine, a cylinder having an inner and an outer wall, a horizontal partition in the space between said walls between theends of said cylinder and forming an annular chamber substantially open to the bottom of s'aidcylinder, an exhaust chamber at one side of said cylinder above said partition, an extension of said annular chamber above the partition, the space between the Walls of said cylinder above the partition forming a water jacket, an intake for air and gas leading into said extension, a check valve for said intake, and a piston in said cylinder.

2. In an internal combustion engine, a cylinder having an inner and an outer Wall, a horizontal partition in the space between said Walls intermediate of the length thereof, and forming an annular chamber at the lower end of said cylinder, an exhaust chamher at one side oi said cylinder above said closing the intake on the downstroke of the piston.

In testimony whereof I afiix my signature in presence of two Witnesses.

CHAS. E. LATHAM.

Witnesses:

ELIAS B. HINKLEY, JOHN'H. RYAN;

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

